Abstract: A synthetic sound generation method for generating a synthetic sound for making a listener recall an image of an actual sound signal which is a sound signal other than a speech signal and of which the listener knows what sound the actual sound signal is, by hearing the speech signal, comprising the steps of: extracting a signal of a predetermined frequency band of an inputted speech signal; extracting an amplitude envelope curve component of the extracted signal; extracting a signal of a predetermined frequency band of the actual sound signal which is a sound signal other than the speech signal and of which the listener knows what sound the actual sound signal is; and multiplying the amplitude envelope curve component of the inputted speech signal and the extracted predetermined frequency band signal of the actual sound signal.